Figure 2. Representative slices from PiB-PET and FDG-PET images.
Marked reduction in glucose metabolism is present in the temporal and parietal as well as the prefrontal cortex on 18F-FDG PET (left). PiB retention ratio maps are presented. Greatest PiB retention is seen in the frontal lobes, where as the occipital lobes are relatively spared (right)